This is a free t-shirt.
Free as in freedom of speech.

Ecological as the hemp it was used to weave it.
Sustainable as the free software used to create it.

Ecological like the lack of planned obsolescence in free software.

Planned obsolescence in software transform in trash many products daily.
Products that are "recycled" where the law are relaxed.
Products that will just keep going if using free software.

Centralized social networks deny daily the user freedom, even with the use of non free javascript.

Let's stop planned obsolescence in software.
Let' stop the waste of electronic product, we need free firmware to stop the waste.
Let's end the wasted energy used for profiling and marketing by artificial intelligence (AI) in centralized social networks.

Zero Smartphone have been build with recycled material, 99% of the rare earth material present in the smartphone can not be recycled or recovered, from 20 to 35% of the material content of a phone is lost when recycled.
Replicant.us is free software for smartphones.
Recycling electronics is a waste of energy. Let's use free software to avoid unnecessary recycling.
Recycling is better than throwing stuff away. But it’s not a solution—and it’s not nearly as “green” as electronics manufacturers want you to believe.

Let's use the licenses of the GNU.org project for software and hardware. Let's demand free, as in freedom of speech JavaScript.

Free software is a cultural heritage, created freely for all humankind.
Ecology comes also from software that is sustainable and responsible.
Ethical software like the one from the GNU.org Project.

Electronic waste contain important percentage of toxic metal.
To guarantee a new life to this products (or better to prevent their end life) is important in regards to ecological sustainability.

The four freedom of the free software are:
1_ The freedom to run the program as you wish, for any purpose (freedom 1).
2_ The freedom to study how the program works, and change it so it does your computing as you wish (freedom 2). Access to the source code is a precondition for this.
3_ The freedom to redistribute copies so you can help others (freedom 3).
4_ The freedom to distribute copies of your modified versions to others (freedom 4). By doing this you can give the whole community a chance to benefit from your changes. Access to the source code is a precondition for this.

An example of free hardware that shaped the world the 3D printers:
www.RepRap.org
That project is a combination of free hardware and free software.

The movement for free software works for a free world without injustice, for a free society.
Free software, Free society